Home / 145,215,065.59-200,390,959.59-79,134,155.43

Finding the Fourth Proportional to 145,215,065.59, 200,390,959.59 and 79,134,155.43

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Solution

The fourth proportional to 145,215,065.59, 200,390,959.59 and 79,134,155.43 is: 109,201,956.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,215,065.59 : 200,390,959.59 = 79,134,155.43 : x
  2. Step 2: Convert to fraction form
    145,215,065.59/200,390,959.59 = 79,134,155.43/x
  3. Step 3: Cross multiply
    145,215,065.59x = 200,390,959.59 × 79,134,155.43
  4. Step 4: Simplify right side
    145,215,065.59x = 15,857,769,343,264,048
  5. Step 5: Solve for x
    x = 15,857,769,343,264,048/145,215,065.59
  6. Step 6: Final answer
    x = 109,201,956.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.